A331033 - cp's OEIS frontend

A331033 a(n) is the least k such that the denominator(sigma(sigma(k))/k) equals n.

n	a(n)
1	1
2	30
3	3
4	32
5	5
6	864
7	7
8	128
9	9
10	10
11	11
12	96
13	13
14	3570
15	45
16	256
17	17
18	216
19	19
20	40
21	147
22	22
23	23
24	6912
25	25
26	468
27	567
28	224
29	29
30	2520
31	31
32	416
33	33
34	374
35	35
36	147456
37	37
38	152
39	117
40	10800
41	41
42	102816
43	43
44	88
45	135
46	46
47	47
48	768
49	49
50	21000
51	153
52	52
53	53
54	6696
55	165
56	896
57	171
58	7424
59	59
60	36960

[1, 30, 3, 32, 5, 864, 7, 128, 9, 10, 11, 96, 13, 3570, 45, 256, 17, 216, 19, 40, 147, 22, 23, 6912, 25, 468, 567, 224, 29, 2520, 31, 416, 33, 374, 35, 147456, 37, 152, 117, 10800, 41, 102816, 43, 88, 135, 46, 47, 768, 49, 21000, 153, 52, 53, 6696, 165, 896, 171, 7424, 59, 36960]

cp's OEIS Frontend

A331033 a(n) is the least k such that the denominator(sigma(sigma(k))/k) equals n.

Table of values

List of values